Abstract In this study, several new 1-(4-aryl-5-triazolyl-2-thiazolyl)-3, 5-diaryl-2-pyrazolines (3a–r) were synthesized by reacting 3, 5-diaryl1-thiocarbamoyl-2-pyrazolines (1) with 2- bromo-1-aryl-2-(1H-1, 2, 4-triazol-1-yl) ethanones (2) in boiling ethanol. The chemical structures of the compounds were verified by IR, 1H NMR, ESI-MS spectroscopic data, and elemental analyses. GRAPHICAL ABSTRACT